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Title: Microbiome assembly in thawing permafrost and its feedbacks to climate

Journal Article · · Global Change Biology
DOI:https://doi.org/10.1111/gcb.16231· OSTI ID:1873051
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5]; ORCiD logo [6]; ORCiD logo [7]; ORCiD logo [8]; ORCiD logo [9]; ORCiD logo [10]; ORCiD logo [11]; ORCiD logo [12]; ORCiD logo [13]; ORCiD logo [14]; ORCiD logo [15]; ORCiD logo [16]; ORCiD logo [11]; ORCiD logo [17]; ORCiD logo [18]; ORCiD logo [19] more »; ORCiD logo [10]; ORCiD logo [20]; ORCiD logo [21]; ORCiD logo [22]; ORCiD logo [23]; ORCiD logo [24] « less
  1. Natural Resources and the Environment University of New Hampshire Durham New Hampshire USA, Molecular, Cellular and Biomedical Sciences University of New Hampshire Durham New Hampshire USA, EMergent Ecosystem Response to ChanGE (EMERGE) Biology Integration Institute
  2. U.S. Army Cold Regions Research and Engineering Laboratory Hanover New Hampshire USA
  3. EMergent Ecosystem Response to ChanGE (EMERGE) Biology Integration Institute, Microbiology Department Ohio State University Columbus Ohio USA, Byrd Polar and Climate Research Center Ohio State University Colombus Ohio USA, Center of Microbiome Science Ohio State University Colombus Ohio USA
  4. Center for Ecosystem Science and Society Northern Arizona University Flagstaff Arizona USA
  5. Center for Ecosystem Science and Society Northern Arizona University Flagstaff Arizona USA, Department of Environmental Studies Amherst College Amherst Massachusetts USA
  6. Molecular, Cellular and Biomedical Sciences University of New Hampshire Durham New Hampshire USA, U.S. Army Cold Regions Research and Engineering Laboratory Hanover New Hampshire USA
  7. Natural Resources and the Environment University of New Hampshire Durham New Hampshire USA
  8. Department of Plant and Wildlife Sciences Brigham Young University Provo Utah USA
  9. Centre for Polar Ecology University of South Bohemia Ceske Budejovice Czech Republic
  10. Department of Environmental and Biological Sciences University of Eastern Finland Kuopio Finland
  11. California State University Northridge Northridge California USA
  12. Natural Resources Institute Finland Helsinki Finland
  13. Institute of Soil Science Universität Hamburg Hamburg Germany, Center for Earth System Research and Sustainability Universität Hamburg Hamburg Germany
  14. Department of Geosciences Princeton University Princeton New Jersey USA, Laboratory of Extraterrestrial Ocean Systems (LEOS) Institute of Deep‐sea Science and Engineering Chinese Academy of Sciences Sanya China
  15. U.S. Geological Survey, Geology Minerals, Energy and Geophysics Science Center Menlo Park California USA, Agriculture and Agri‐Food Canada Quebec Research and Development Centre Quebec Quebec Canada
  16. GFZ German Research Centre for Geosciences Section Geomicrobiology Potsdam Germany
  17. Department of Geosciences Princeton University Princeton New Jersey USA
  18. Centre for Microbiology and Environmental Systems Science University of Vienna Vienna Austria, Austrian Polar Research Institute Vienna Austria
  19. Institute of Arctic Biology University of Alaska Fairbanks Fairbanks Alaska USA
  20. Lawrence Berkeley National Laboratory Berkeley California USA
  21. University of Alaska Fairbanks Alaska USA
  22. University of Tennessee Knoxville Tennessee USA, Institute of Physicochemical and Biological Problems of Soil Science Pushchino Russia
  23. U.S. Geological Survey, Geology Minerals, Energy and Geophysics Science Center Menlo Park California USA
  24. GFZ German Research Centre for Geosciences Interface Geochemistry Potsdam Germany, BfR Federal Institute for Risk Assessment Berlin Germany

The physical and chemical changes that accompany permafrost thaw directly influence the microbial communities that mediate the decomposition of formerly frozen organic matter, leading to uncertainty in permafrost-climate feedbacks. Although changes to microbial metabolism and community structure are documented following thaw, the generality of post-thaw assembly patterns across permafrost soils of the world remains uncertain, limiting our ability to predict biogeochemistry and microbial community responses to climate change. Based on our review of the Arctic microbiome, permafrost microbiology, and community ecology, we propose that Assembly Theory provides a framework to better understand thaw-mediated microbiome changes and the implications for community function and climate feedbacks. This framework posits that the prevalence of deterministic or stochastic processes indicates whether the community is well-suited to thrive in changing environmental conditions. We predict that on a short timescale and following high-disturbance thaw (e.g., thermokarst), stochasticity dominates post-thaw microbiome assembly, suggesting that functional predictions will be aided by detailed information about the microbiome. At a longer timescale and lower-intensity disturbance (e.g., active layer deepening), deterministic processes likely dominate, making environmental parameters sufficient for predicting function. We propose that the contribution of stochastic and deterministic processes to post-thaw microbiome assembly depends on the characteristics of the thaw disturbance, as well as characteristics of the microbial community, such as the ecological and phylogenetic breadth of functional guilds, their functional redundancy, and biotic interactions. These propagate across space and time, potentially providing a means for predicting the microbial forcing of greenhouse gas feedbacks to global climate change.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Univ. of Tennessee, Knoxville, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); Academy of Finland; German Federal Ministry of Education and Research (BMBF); European Research Council (ERC); Czech Science Foundation; National Aeronautics and Space Administration (NASA); National Science Foundation (NSF)
Grant/Contract Number:
DE‐SC0020369; Early Career Research program; AC02-05CH11231; SC0020369; SC0016440; 290315; 313114; 314630; 773421; EXC 2037; 20-21259J; NNH15AB58I; NNX15AM12G; 1331083; 1916565; 1931333; 2022070; DEB-1442262; 2144961
OSTI ID:
1873051
Alternate ID(s):
OSTI ID: 1873054; OSTI ID: 1894318; OSTI ID: 1991927
Journal Information:
Global Change Biology, Journal Name: Global Change Biology Vol. 28 Journal Issue: 17; ISSN 1354-1013
Publisher:
Wiley-BlackwellCopyright Statement
Country of Publication:
United Kingdom
Language:
English

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